1. Department of Cognitive Science and Mathematical Modelling, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszow, Poland
2. Faculty of Philosophy, Universidade Federal de Goiás, Avenida Esperança s/n, Câmpus Samambaia, Prédio da Reitoria, CEP 74690-900 Goiânia, Brazil